Drying-tumbler



as nu' ioo JAMES F. '.BRODERICK, OF CHICAGO, ILLINOIS, ASSIGNOIR T0 TROY LAUNDRY MACHINERY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW YORK.

Application filed July 3, 1919.

To all whom it may concern Bc it known that I, JAMES F. BRODERICK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Drying-Tumblers, of which the following is a specification.

This invention relates to an apparatus for drying laundry articles, and operates upon the principle of agitating the articles 'n al i'eticulated drum or cylinder, through w ich is driven a body of air in suitable condition to absorb the moisture from the articles, as, for instance, by rst forcing the body of air under a suitable head of pressure through a heating and drying chamber, and thence to the cylinder.

Under some conditions, it is desirable to discharge the air after it passes through the cylinder; while in others, for the sake of economizing in heat units, it becomes desirable to circulate the air repeatedly through the machine, as, for instance, by feeding the air-forcing device, mainly or wholly, with air that has passed through the cylinder. But when the air is thus used repeatedly, it becomes very important to delint the air, or strain out the bers which it picks up in the cylinder, and thus prevent the fibers from accumulating around the bearings of the apparatus or being returned and deposited upon the articles in the cylinder.

The object of the present invention is to provide a machine which isconveniently convertible for operation in either of the two ways above named. Accordingly, the invention consists in providing in a machine of the class described, a delinting chamber having a lint-arresting screen through which air from the drying cylinder can pass in reaching the air-forcing device by which it will be returned through the drying chamber tothe cylinder; and having also an imperforate shutter that is adapted to replace the screen, oroverlie or underlie the same in' a manner to arrest the passage of air from the 'delinting chamber to the air-'forcing device, and thereby cause the air to escape from the delinting chamber through another channel, as, for instance, that usually proL vided for discharge of the lint that accumulates in the delinting chamber. Different methods may be followed in substituting the shutter for the screen, ory introducing the Specification of Letters Patent.

DRYING-TUMIBLER.

raten-teu ieee. a, raie,

Serial N0. 308,500.

shutter into and out of position in which it will arrest the passage of air through the screen, but this is preferably accomplished by arranging the shutter to slide into and out of position after the manner of a drawer, the screen being similarly arranged so tnat it may be removed after the shutter is placed in position, particularly if it should be desired to subject the screen to a cleaning operation while out of the machine.

The invention will be fully understood upon reference to the accompanying drawing, in which- 5 Figure 1 is a vertical sectional view of a drying tumbler; and F Fig 2 is asection on the line 2-2 of The machine herein disclosed for the purpose of illustrating the present improvement is that forming the` subject-matter of an application filed March 31st, 1919, in the name of William Bartholomew, Serial No. 286,334, and which comprises a drying tumbler 1 having a reticulated cylindrical wall la with a door 1b by which to introduce and remove articles to be dried; a casing 2 which surrounds the cylinder and which is provided with a door 22L through which to gain access to the door 1b; an opening 3 which leads through the wall of the cylinder from a drying chamber 4; an air trunk 5 leading from a blower 6; a suction chamber 7 from which air is drawn into the blower 6; and a delinting chamber 9 into which the air passes from the drying cylinder, and which is provided with a discharge port 9 for lint accumulatin therein, through which air with the lint arrested therefrom may pass from the delinting chamber into the suction chamber, and a ysweep 11 adapted to traverse the inner surface of the screen 10 totransfer. to the discharge port the lint accumulating on the screen.

According to the present invention, an imperforate shutter 12 is applied over the lspace occupied by the screen 10, as, for inthe action of the sweep 11 to continue over the arresting surface of the screenA after the shatter .isintroduced The screen is also preferably mounted in guides 10u which a screen 10v .u ing the screen and then inserting the shutter, orby having the tracks of ,theigulde's continue through the machine, (se that by 11iadapt the screen to be Withdrawn While the shutter is in place, in case it is desired to lclean or repair the screen. bvlou'sly,

the shutter and screen could be fitted in the f same guides, as, `for instance, by Withdraw- 'troducing the shutter at one end the'screen isv forcedout at theother end, and vice versa, and one member thus substituted for the other without leavingk'the wall between .the chambers 7 and -9 unprotected at ,any`

time-f With an equipment a's above-described, when operating in a relatlvely cold atmosphere or under other conditions which make it desirable to circulateair through the ma-l chine, using the same air repeatedly/ to# getherwith such increment as may be'necessary', and which may be'taken in as needed through` the intake .'14 in the chamber 7 lor, Whenv operating -in a-rela'ti-velyvvarm atmosphere'so, that economizing invheat units'v 'or other conditions make -it circulate the air, introductionof the shutter,

either as a substitute for the screen 10er as a deadening closure therefor, will cause all i the-air to be discharged through the port 9al after being used, a constantly freshsupply of air being taken'in through the .intake e 14. There is a further advantage incoinbining the shutter 12 With'the screen 10 '1n-the closing v'said opening of air'therethrough.

tumbler having; im airarrangement' described, inl that vby temporary introduction of the shutter and-inten. ruption of the vpassage'ofair through the screen, the sweep 11 willoperateto much better advantage in removing the lint the screen.

I claim:

1. In a dryingtumbler :having an' air;- -clrculating channel and a delinting chamber provided with a screened-'opening throughwhich it delivers air i to the Y circulating channel, an impervious shutter adapted for and arresting the flow 2. In .a drying circulating channell and adelintingchamb'er provided vvith a screenedop'enn'g ithrough which it delivers air to the circulating Lena-,cva

which delivers air to the circulating channel, an impervious shutter adapted for closing said Vopening and arresting the o'vvof nel, an impervious shutter adapted for clos- ,Y

'ing said. openin and arresting the iow of air .therethroug said delintingl chamber having a sweep adaptedtotraverse the sur- 'face of the screen, and 'said opening. being adapted to receive bothl'the screen' and the shutter with g the screen exposed to the sweep While the shutter is in position..

f4.' In adrying tumbler having an aircirculating channel anda delinting chamber provided with a screened opening through which it delivers air to the circulating cham A, nel, an impervious shutter adapted forv closing said opening and arresting the ow ofairV therethrough; "said opening being adapted 'to hold either theA screen' or the,

shutter -at Will.

in .a d1-ying tumbler having an aircirculating channel and a delinting chamber provided with a screened opening through which it delivers air to thecirculating channel, an impervious shutter adapted for closing -said opening and arresting the iow Yof airftherethrough; said delinting chamber;l

having a port through which. air discharges, and said circulating channel having an,-in

' 'take through which air is admitted when the shutter' is'closing said opening. Y-

6. inem-ying tumblerzhavmgn i circulating-channel and a delinting chamber provided with ascre'ened opening through `chanfinel, an impervious shutteradapted for-'closlng said opening and the i'ow of, l

air? therethrough; said shutter *being adapted 'to slide into. and out. of position to.

'-.vclose-saidopening. A- 'i a d t Chicagqvlllinois, 12th day or May,11919 v -JAMES EBnoDEnIcK.- 

